Furnace.



W. TROELLER.

Patented P00121916.

2 SHEETS-SHEET I.

THE "o en/s zrsnscu wxasmucrow. nc.

W; TROELLER.

.FURNACE.

APPLICATION FILED APR. 9. 1915.

LfiU'T/filQ Patented Dec. 12, 1916.

2 SHEETS-SHEET 2.

11: NORRIS PETERS coy, WASHINGTON, a, c

WILI-IELM TROELLEIR, OF FRANKFURT-GN-TEE-MAIN, GERMANY.

FURNACE.

Specification of Letters Patent.

Application filed. April 9, 1915.

To all whom it may concern Be it known that I, l/VILHELM TnonLLnn, a subject of the Emperor of Germany, residing at Frankfort-on-the-Main, Germany, have invented certain new and useful lmprovements in Furnaces, of which the following is a specification.

The invention relates to improvements in furnaces for sintering, burning, roasting, reducing, or otherwise treating bricks, ores, cement materials or other substances.

The furnace forming the subject-matter of the invention consists of a plurality of iron receivers into which the material is charged in such a manner as to leave passages for the gases. Between each two receivers there is inserted a compartment, to which the flames and gases intended for the treatment of the charge are admitted and from which the waste gases are discharged. The receivers located between each two of these compartments are arranged in such a manner that they can be removed from the furnace independent of the other receivers and of the compartments, after the treatment of the charge is completed and that a new receiver may be inserted between each two compartments without removing any of the other receivers or the compartments from their position. Each of the compartments is in connection with an admission and a discharge conduit for the difierent gases draining into corresponding main channels, so that each of these compartments can be connected to or shut off from these main channels. The working of the furnace thus constructed is such that the several receivers arranged one behind the other one will be in different stages of treatment, the recently inserted receiver being in an initial stage of the treatment, whereas the receiver which was subjected to treatment during the longest time is undergoing the most intense treatment or is in a stage of subsequent treatment, When sintering of ore, cement materials or the like, is to be accomplished, then the receiver being in the furnace for the longest time will be nearest to the compartment wherein the heating flame is generated, or it will be exposed in front of the compartment, in which the heating flame is generated, to subsequent treatment by means of air or other gases with a view to cooling or producing chemical reactions.

The compartments and receivers will be preferably arranged one behind the other Patented Dec. l2, 1916..

Serial no. 20,163.

according to a recurvant line, the operation thus progressing always upon this line. Be tween the compartment wherein the operation is at its last stage and the compartment, wherein the operation is at the beginning, there is left a free space of the length of one receiver. After the removal of a receiver, the treatment of which is finished, a receiver with fresh material is inserted into said free space.

The drawing shows a furnaceaccording to the invention, Figures 1 and 2 being respectively plans in two different working stages, Fig. 3 a longitudinal section accord ing to line A.l3 of Fig. 1, and Fig. t a

cross-section after CD of Fig. 1.

The receivers. a (for instance six in number, designated 0, to a) which maybe formed of several sections connected together, as shown in the drawings, are charged with the material to be treated in such a manner as to leave gas passages. They are removable transversely of the longitudinal axis of the furnace, upon rails (or otherwise, for instance by means of a hoisting device or the like) and inserted between each two of the free compartments 7) (7) to 6) intended to be used successively as burner chambers, air admission chambers, and waste gas chambers. Eachof these compartments 6 to b is connected by means of branch pipes c to the main gas conduit (Z, by means of branch pipes c to the main air channel. 7 and by means of branch pipes c to the flue channel. It. Said branch pipes c, c, {7 are provided with slide-valves by means of which the free compartments 7) can, according to the requirements of the working stage, either be connected with the conduits (Z, f, 7t or shut off from them. As shown in the drawings, also the free compartments 72 to 6 may be arranged on rails and be removed transversely of the longitudinal, axis of the furnace, so as to enable their easy replacement in case of wear. During the working of the furnace however these compartments are always infixed connection with the conduits.

The furnace plant is arranged in a recurvant line in such a manner that a free space of the length of one receiver is left between the last compartment 72 connected to the flue channel and the first one 6 connected to the air admission. In the rectangular furnace arrangement shown in the drawing, the connection of the two parallel lines upon which are arranged the compartments and receivers is secured by means of the connecting compartments V V mounted on wheels and removable upon rails.

The operation of the furnace may be as follows: In the position shown in Fig. 1, air is admitted to the compartment which flows through receiver a and combines in the compartment 6 with the gas there admitted, forming a flame which first propagates through the receiver a, then across the connecting compartment V receivers and compartments a L (L Z1 a 6 and the connecting compartment V to the compartment b the latter communicating with the flue channel. After the receiver a is sufficiently cooled and heating is accomplished in the receiver a the slide valves of the air conduit 6 connected to b and of the gas conduit 0 connected to b are closed, the receiver with finished treatment a is disengaged from the compartments 6 and b and removed sidewise for being discharged and filled again. The front covers 2' are removed from the compartments b and b and a new receiver a filled with fresh material is inserted between I)? and 6 The right hand front opening of the compartment Z2 'as well as the left hand front opening of compartment 5 are then provided with covers 2', by opening the slide-valves in the corresponding conduits 0, e, g, communication is established between compartment 6 and air conduit f, compartment 6 with gas conduit cl and compartment 6 with fluefchannel h. VVo'rking is thus advanced in the furnace byonereceiver. The same manipulation is repeated each time after treatment is finished in the receiver newly under treatment.

Fig. 2 shows the condition of the apparatus after the material in each of the re ceivers shown in Fig. I has been treated and each of the receivers has been removed. In this case the air flows through receiver a and the flame generated in compartment 6 flows successively through the other receivers. As the compartment V is not in use, it may be removed if desired as indicated in dotted lines.

The furnace may of course be composed of a more or less great number of receivers and compartments, as shown in the drawing, and the furnace arrangement may be given another form. For' instance the receivers and compartments might be disposed in the form of a. square, polygon or circle. In the case of rectangular arrangement the connecting compartments V V may be dis pensed with, by inserting at the narrow sides of the rectangle still one or more receivers and by providingv fixed corner-piececompartments at the angles, acting inthe same way as the other compartments 6. The whole furnace might also be arranged in a straight line, treatment thus proceeding along this line, at the ends of which the receivers containing material still under treatment have to be interchanged in such a way that working can proceed in the inverted direction.

The furnace may serve different purposes and can be worked otherwise than described. For instance the subsequent treatment with air may be replaced by subsequent treatment with other, for instance reducing gases, or subsequent treatment may be dispensed with at all. Instead of treating with a heating flame, hot reducing gases might be used for reducing the material or for bringing about other reactions. Oil or other liquid or solid fuel may also be employed for producing the heating flame instead of burning gas. The invention may be applied for carrying through difl erent metallurgical or chemical methods of treat ment. The operation may be carried through in such a way that the heat required for sintering or other treatment is produced by combustion of the gases within the very material to be treated (by flameless combustion).

hat I claim is:

1. In a furnace for the purpose described, in combination, two compartments, one of the compartments being provided with a fluid inlet and the other of the compartments being provided with a fluid outlet, and a removable receiver for the material to be treated inserted between the compartments and communicating therewith, said receiver being removable without moving the compartments.

2. In a furnace for the purpose described, in combination, a plurality of compartments arranged in line, means associated with each compartment for the admission and discharge of fluid, and a plurality of receivers for the material to be treated arranged in line in alternating relation with the compartments and communicating therewith and removable transversely of the line.

3. In a furnace for the purpose described, in combination, a plurality of compartments arranged in series, means associated with each compartment for the admission and discharge of fluid, a plurality of removable receivers for the material to be treated arranged in alternating relation between the compartments and communicating therewith, and guiding means for two receivers whereby the two receivers may be simultaneously removed from the furnace alon separate non-alined paths.

4:. In a furnace for the purpose described, in combination, a plurality of compartments arranged in series, means associated with each compartment for the admission and discharge of fluid, and a plurality of removable receivers for the material to be treated arranged in series in alternating relation with the compartments and communicating therewith, each receiver being removable Without moving any other receiver or any of the compartments.

5. In a furnace for the purpose described, in combination, two rows of compartments, means associated with each compartment for the admission and discharge of fluid, removable receivers for the material to be treated arranged between the compartments of each row, and fluid conducting means connecting the compartments at each end of one row with the compartments at the corresponding end of the other row.

6. In a furnace for the purpose described, in combination, a plurality of ore and fluid receiving compartments arranged in line alternately to form longitudinal subdivisions of the furnace, a plurality of the ore compartments being separately removable from the furnace transversely of the furnace, and permanently connected conduits one for directly discharging fluid into one of the fluid receiving compartments and the other for directly discharging fluid from another fluid receiving compartment.

7. In a furnace for the purpose described, in combination, a plurality of ore and fluid receiving compartments arranged in line alternately to form longitudinal subdivisions of the furnace, a plurality of the ore compartments being separately removable from the furnace transversely of the furnace, and means for directly discharging fluid selectively into either one of two fluid receiving compartments without moving such comp'artments.

8. In a furnace for the purpose described, in combination, a plurality of ore and fluid receiving compartments arranged in line alternately to form longitudinal subdivisions of the furnace, and means for directly feeding fluid to one of two fluid receiving compartments, at least three of the ore compartments being removable from the furnace simultaneously.

In testimony whereof I aflix my signature in presence of two witnesses.

IVILHELM TROELLER.

Witnesses:

JEAN GRUND, CARL GRUND.

topics of this patent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. C. 

